Short answer
Most ordinary urine accidents can be treated, but how much odor comes out depends on how deep the liquid went and how long it sat. Surface layers and covers usually respond. A core that was soaked through may not fully recover. Sleep Sanitation treats ordinary accidents and pet odor as part of the standard price, pairing enzyme treatment with low-moisture dry vapor matched to the mattress material.
By Matthew Brunken · Updated October 2, 2026 · Last reviewed October 2, 2026 · Sources · Editorial standards
Urine accidents come with a lot of bad advice attached. Some guides tell you to pour on cleaner until the stain is soaked. Others say a mattress is ruined the moment urine touches it. Neither is right for most beds.
This hub works through the question the way we do on a job. First, what urine actually is and how it changes as it sits. Then where it goes inside each kind of mattress, what the manufacturer of that mattress says about cleaning it, and what heat, enzymes and drying can and can't do. Last, how to tell a bed that will recover from one that won't.
Not affiliated with or endorsed by any manufacturer listed. Brand names are used only to identify products and their published care instructions.
Why accidents need their own hub
Hub 1 explains cleaning methods and why moisture matters. Hub 2 quotes what each brand and material tolerates. Accidents bring both questions at once, with a deadline: liquid is already in the bed, and every hour it sits it spreads and changes.
Urine is mostly water, per NASA's 1971 composition report, but what makes it hard to clean isn't the water. Urea, the main nitrogen compound in urine, is broken down by common bacteria into ammonia, according to a 1989 review of microbial ureases. NASA saw the same thing when it studied stored human urine for spacecraft systems: bacterial action decomposed the urea and released large amounts of ammonia. That is why an old accident smells sharper than a fresh one, and why speed matters.
What this hub covers
The flagship guide is the place to start. It explains what can be removed, what can't, and the limits each material sets. The articles below it each answer one question people ask us, such as what to do when a dog has peed on a Tempur-Pedic, whether an enzyme cleaner can hurt memory foam, and why the smell came back after the bed dried.
Every article follows the same rules as the rest of the Knowledge Center. We quote manufacturers exactly and link the page. We separate what a source says from what we think. We don't invent numbers: where nobody has measured something, the article says so.
Sleep Sanitation's position
Most everyday accidents are treatable, and treating them costs nothing beyond the standard price. The tools are a light enzyme application wherever urine or organic odor is present, given time to work, followed by heat from our Magnum XP, ProV 350 and Pro6 Duo at settings chosen for each material. By default we clean with organic methods.
Two limits come with that position. Severe, biohazard or extensive contamination is a custom surcharge, quoted before we start. And a core that was soaked through may not come all the way back. We would rather tell you that at the door than after the visit.
Some makers are explicit about steam and liquid, and the articles below quote them rather than summarize them. Tempur's UK care page says: "There is a high risk that soaking with water or other cleaning fluids will cause irreversible damage, destroying the benefits of comfort and support which the TEMPUR ® Material provides. It will also invalidate your guarantee. Do not steam-clean or dry-clean the TEMPUR ® Material." Purple also advises against steam cleaning memory foam, latex and adjustable mattresses, while drawing a line at innerspring and hybrid beds, which its guide says can be steam cleaned.
Sleep Sanitation does clean these beds, using quick, repeated low-moisture dry-vapor passes. That is our own method and our own reasoning, not a manufacturer exemption or a reading of anyone's label. Your care label and warranty terms govern your decision. Check your warranty, or ask the manufacturer, before any steam or vapor cleaning.
Urine treatment is cleaning, not disinfection; the CDC's clean, sanitize and disinfect distinction explains the difference.
How to use this hub
- An accident just happened. Start with what to do in the first hours, then read the article for your mattress type.
- The smell came back. Read why urine odor comes back after a mattress dries.
- You're deciding whether to replace the bed. Read clean or replace and does urine mean you have to replace your mattress.
- Looking up a word? The glossary below defines urea, uric acid, dwell time, wicking and the other terms these articles use.
For service details, see accidents and illness cleanup or pricing.